ipc/chromium/src/base/port.h@6474c204b198 (annotated)
ipc/chromium/src/base/port.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef BASE_PORT_H_ |
| michael@0 | 6 | #define BASE_PORT_H_ |
| michael@0 | 7 | |
| michael@0 | 8 | #include <stdarg.h> |
| michael@0 | 9 | #include "build/build_config.h" |
| michael@0 | 10 | |
| michael@0 | 11 | #ifdef COMPILER_MSVC |
| michael@0 | 12 | #define GG_LONGLONG(x) x##I64 |
| michael@0 | 13 | #define GG_ULONGLONG(x) x##UI64 |
| michael@0 | 14 | #else |
| michael@0 | 15 | #define GG_LONGLONG(x) x##LL |
| michael@0 | 16 | #define GG_ULONGLONG(x) x##ULL |
| michael@0 | 17 | #endif |
| michael@0 | 18 | |
| michael@0 | 19 | // Per C99 7.8.14, define __STDC_CONSTANT_MACROS before including <stdint.h> |
| michael@0 | 20 | // to get the INTn_C and UINTn_C macros for integer constants. It's difficult |
| michael@0 | 21 | // to guarantee any specific ordering of header includes, so it's difficult to |
| michael@0 | 22 | // guarantee that the INTn_C macros can be defined by including <stdint.h> at |
| michael@0 | 23 | // any specific point. Provide GG_INTn_C macros instead. |
| michael@0 | 24 | |
| michael@0 | 25 | #define GG_INT8_C(x) (x) |
| michael@0 | 26 | #define GG_INT16_C(x) (x) |
| michael@0 | 27 | #define GG_INT32_C(x) (x) |
| michael@0 | 28 | #define GG_INT64_C(x) GG_LONGLONG(x) |
| michael@0 | 29 | |
| michael@0 | 30 | #define GG_UINT8_C(x) (x ## U) |
| michael@0 | 31 | #define GG_UINT16_C(x) (x ## U) |
| michael@0 | 32 | #define GG_UINT32_C(x) (x ## U) |
| michael@0 | 33 | #define GG_UINT64_C(x) GG_ULONGLONG(x) |
| michael@0 | 34 | |
| michael@0 | 35 | namespace base { |
| michael@0 | 36 | |
| michael@0 | 37 | // It's possible for functions that use a va_list, such as StringPrintf, to |
| michael@0 | 38 | // invalidate the data in it upon use. The fix is to make a copy of the |
| michael@0 | 39 | // structure before using it and use that copy instead. va_copy is provided |
| michael@0 | 40 | // for this purpose. MSVC does not provide va_copy, so define an |
| michael@0 | 41 | // implementation here. It is not guaranteed that assignment is a copy, so the |
| michael@0 | 42 | // StringUtil.VariableArgsFunc unit test tests this capability. |
| michael@0 | 43 | |
| michael@0 | 44 | // The C standard says that va_copy is a "macro", not a function. Trying to |
| michael@0 | 45 | // use va_list as ref args to a function, as above, breaks some machines. |
| michael@0 | 46 | # if defined(COMPILER_GCC) |
| michael@0 | 47 | # define base_va_copy(_a, _b) ::va_copy(_a, _b) |
| michael@0 | 48 | # elif defined(COMPILER_MSVC) |
| michael@0 | 49 | # define base_va_copy(_a, _b) (_a = _b) |
| michael@0 | 50 | # else |
| michael@0 | 51 | # error No va_copy for your compiler |
| michael@0 | 52 | # endif |
| michael@0 | 53 | |
| michael@0 | 54 | } // namespace base |
| michael@0 | 55 | |
| michael@0 | 56 | // Define an OS-neutral wrapper for shared library entry points |
| michael@0 | 57 | #if defined(OS_WIN) |
| michael@0 | 58 | #define API_CALL __stdcall |
| michael@0 | 59 | #elif defined(OS_LINUX) || defined(OS_MACOSX) |
| michael@0 | 60 | #define API_CALL |
| michael@0 | 61 | #endif |
| michael@0 | 62 | |
| michael@0 | 63 | #endif // BASE_PORT_H_ |
